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Loading contentHR 6128 is a red dwarf in the constellation Ophiuchus (Ophiuchi), lying about 577.3 light-years from Earth.
Class M. Cool red stars. The most common type in the galaxy, ranging from red dwarfs to red giants. Such stars have surface temperatures around 2,400–3,700 K and appear red to the eye.
| Spectral type | M2 comp |
| Apparent magnitude | 5.24 |
| Absolute magnitude | -1 |
| Luminosity (Sun = 1) | 219 |
| Colour index (B−V) | 1.721 |
| Distance | 577.3 ly (176.99 pc) |
Values are real catalogue data; fields without a reliable value are omitted, never estimated.
A red dwarf is a small, cool, low-mass main-sequence star. Red dwarfs burn their fuel so slowly that they can shine for tens of billions of years — far longer than the present age of the universe.
Facts on this topic will be cited from these primary and reference sources.
Aggregated, openly-licensed star catalogue combining Hipparcos, the Yale Bright Star Catalogue, and the Gliese Catalogue of Nearby Stars.
High-precision parallax, magnitude, and position for ~118,000 stars.